Same thing I did - simple math - Saab Performance Bulletin Board - Saabnet.com
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Same thing I did - simple math
Posted by Chuck in SD [Email] (more from Chuck in SD) on Fri, 25 Mar 2005 18:52:42
In Reply to: heres something I did to the NG a lil hack but ........, jak
[Profile/Gallery]
, Fri, 25 Mar 2005 14:16:11
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Nearly 50 in^2. Better than the 3" slack job some do. People don't learn math nowadays.
Area of a circle is pi x r^2 (A = pi x r^2)
With a 3" diameter tube, r = 1.5" So, 1.5" x 1.5" = r^2 = 2.25"
Therefore, pi (3.14) x 2.25" = 7.07"
Area of the filter is 10" x 5" = 50"^2
That means the area of the filter with the bottom of the box cut like you and I did is SEVEN TIMES THE AREA OF THE 3" MOD THE SHADE TREE HACKS ARE SO PROUD OF.
Further, I sealed off the bottom of the filter box from the hot engine bay so I get colder air. The 'cold air' jokes that people put on that suck in hot engine air aren't even worth the placebo effect.
Engineering is fun and not only my daytime gig. :-)
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